The skin, sweat, and biological matterial that accumulates underneath large, unclean breasts
"Paul was having a good time playing with Brittany's tits until he discovered flakes of boob cheese underneath her breasts."
by Mo'lester July 3, 2016
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I couldn't find this on here so here is the definition:
A woman's breast milk but it's cheese
Girl 1: I like this cheese! What kind is it?
Girl 2: It's my boob Cheese!
Girl 1: Oh shit-
by MyManIsSoHotWTF March 30, 2021
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..crunch, moist, cheese like substance found on trailor park titties.

also when people have pimply tits, its the puss that comes out of the pimples.
"man, pam has awful bad Boob cheese"
by caitieloo January 14, 2006
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